KANTANKRUS Posted November 4, 2019 Posted November 4, 2019 On a rear axle of an MJ, what is the measurement between the backer plate and the outboard side of the leaf spring perch? Please advise :)
KANTANKRUS Posted November 5, 2019 Author Posted November 5, 2019 Well looky here. I discovered that my leaf springs are twisted at the rear... now I wonder if I can buy offset shackles instead of moving the perches!
Pete M Posted November 5, 2019 Posted November 5, 2019 just move the perches. even if you fix the rear shackle distance, the perches still won't match the front leaf mounting points distance apart. you can even use this opportunity to get some anit-wrap perches.
KANTANKRUS Posted November 5, 2019 Author Posted November 5, 2019 22 minutes ago, Pete M said: just move the perches. even if you fix the rear shackle distance, the perches still won't match the front leaf mounting points distance apart. you can even use this opportunity to get some anit-wrap perches. I have no welder and or welding experience, so therefore I will have to find someone that can do it for me. Where can I buy anti-wrap perches, as anything like that would be very helpful!
Eagle Posted November 5, 2019 Posted November 5, 2019 How are your springs twisted? Is it possible that a previous owner did a spring-over conversion by swapping in an XJ rear axle without relocating the spring perches to the correct location?
KANTANKRUS Posted November 5, 2019 Author Posted November 5, 2019 39 minutes ago, Eagle said: How are your springs twisted? Is it possible that a previous owner did a spring-over conversion by swapping in an XJ rear axle without relocating the spring perches to the correct location? Yes sir. My truck had a Ford 8.8, with the SOA done to it, when I bought it. That 8.8 was geared 3.73 and the front diff/axle was still stock 3.08, With Cad... so therefore it was in pre runner mode. Since then, those axles have been swapped out with (already matching geared XJ axles) Yukon 4.56, lunchbox rear, Eaton LSD front (Chrysler 8.25/Dana30HP.)
KANTANKRUS Posted November 5, 2019 Author Posted November 5, 2019 The perches must be relocated, sadly!
Pete M Posted November 5, 2019 Posted November 5, 2019 it's about as easy as welding can get. any automotive or muffler shop can do it.
thecodemonk Posted November 9, 2019 Posted November 9, 2019 If you do get a welder and aren't confident, you can get it all measured up, level, and tacked in place...just enough to hold it during transport, then take it to a friend or any welding place to finish burning it in. I like the ruff-stuff perches, myself. :)
KANTANKRUS Posted November 10, 2019 Author Posted November 10, 2019 Friends, I am not sure that I have any. Any of which will follow through with their commitments. They say that they will help, but then they vanish.
kryptronic Posted November 12, 2019 Posted November 12, 2019 On 11/9/2019 at 6:11 PM, thecodemonk said: If you do get a welder and aren't confident, you can get it all measured up, level, and tacked in place...just enough to hold it during transport, then take it to a friend or any welding place to finish burning it in. This. Do not weld spring perches as your first welding project. You're going to have to burn them on hot and need to be able to trust those welds. They may take more stress than any other welds on the vehicle.
Pete M Posted November 12, 2019 Posted November 12, 2019 I built my entire truck without welding a single thing myself. bumpers, suspension, rock rails... everything but the bends in the rollbar were fabbed by me using a drill/grinder and then hauling it to a pro for welding. I'm not about to trust my life to my own welding skills.
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